3 cles with this girl in the fall semester... Friends or more?

We had only one cl this semester and spoke very briefly, not sure if she has a BF, but probable, although I am not 100% sure. So a couple of days back, she discussed what cles she wanted to take, and asked me if I wanted to take cles with her. When I said I am going for the summer, she seemed very upset.Today I met her in the college hallway to discuss cles for next semester and she was talking to someone on the phone (presumably the BF, cause she was saying babe) when she spoke to me she said "hold on" to the phone twice in an agitated way. Any chances after the summer, judging by the last few days?